industrial turntable bearing

A bearing for the rotating platform

An industrial turntable bearing connects a rotating structure to its stationary base. Its two rings and rolling elements allow rotation while transferring vertical load, side load, and the moment created when a load acts away from the rotation axis. The surrounding frame, bolts, and drive determine how those forces enter the bearing.

SWBTEC’s products on this page are slewing rings for equipment such as machinery tables, sorting carousels, and agricultural rotating assemblies. The search term also covers compact swivel plates and complete pallet turntables; those products have different interfaces and capacity definitions. For a machine design, identify the bearing itself and the structure that will mount it.

Choose the rolling element and drive interface

Start with the load combination and available mounting envelope. A single-row ball slewing ring can be a compact choice where a low-friction, lighter-duty arrangement fits the machine. A crossed roller ring uses alternating roller orientations to carry combined loads and can be considered when overturning stiffness or a compact roller arrangement matters. Compare actual model data under the same load case before choosing between them.

SWBTEC industrial turntable bearing options

Compare these two SWBTEC bearing families for a rotating machine platform. Each product link opens its dimension table; use the quoted model and drawing version when comparing mounting holes, ring height, gear configuration, and weight.

Gearless double-flange slewing bearing

Slewing Bearing Without Gear

A lightweight, double-flange, single-row ball slewing ring for low-speed rotating equipment that uses a separate drive or positioning interface.

• Catalog modelsSW-414.20 to SW-1094.20
• Listed outside diameter518–1,198 mm (20.4–47.2 in)
• GearNone

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Crossed roller slewing bearing

Cross Roller Slewing Bearing

A single-row crossed roller slewing ring for a rotary table or other machinery that must carry axial, radial, and overturning loads together.

• Catalog configurationsGearless, external gear, internal gear
• Example external-gear model111.25.500
• Example ring diameter602 mm (23.7 in)

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Send the operating loads and mounting drawing

Record the axial force, radial force, and overturning moment that occur at the same time for each operating condition. Include startup, braking, shock, and parked conditions where they change the controlling load. A single “maximum load” number cannot show how the bearing and its bolts share a moment load.

Send the available outside and inside diameters, height limit, bolt-circle and hole details, and which ring rotates. Add rotational speed or oscillation angle, cycles or duty time, required life, ambient conditions, and any accuracy or backlash target. For a geared version, include the pinion and drive arrangement. SWBTEC can then compare a specific bearing model against the relevant load and mounting conditions.

For replacement work, provide the original part number, machine model, controlled drawing, and measured interfaces. Matching outside diameter alone does not establish interchangeability when hole positions, gear data, ring height, or internal clearance differ.

Design the connection around the bearing

The bearing needs a rigid, flat support on both rings so the mounting structure distributes load as assumed in the design check. Confirm the bolt grade, clamp length, tightening method, and access for installation. If the selected version has an integral gear, check pinion position, tooth contact, backlash, and gear lubrication on the actual assembly.

Plan access to lubrication points and seals before the surrounding guards and drive are finalized. Lubricant, relubrication interval, and inspection limits depend on the selected model, duty cycle, temperature, and contamination; the operating instructions for the ordered bearing should set those values.

Manufacturing and inspection records

Ningguo Swbtec Industry Co.,Ltd manufactures the SWBTEC slewing bearing range. Its documented process covers ring machining, raceway induction hardening, hole and gear machining where applicable, assembly, and final inspection. Inspection items can include overall dimensions, mounting holes, axial and radial clearance, ring runout, raceway hardness, and free rotation.

Ask for the drawing revision, applicable inspection items, and the report linked to the ordered model and serial or batch identity. The inspection scope for a gearless ring differs from a geared ring, so the purchase specification should identify the checks that apply to the chosen configuration.